Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack
International audience In polar deserts, depth hoar (hereinafter: DH) growth is not systematic unlike on tundra and this is critical for snowpack properties. Here, we address the spatio-temporal variability of the DH layer in the polar desert at two sites in the Canadian High Arctic: Ward Hunt Islan...
Published in: | Journal of Glaciology |
---|---|
Main Authors: | , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2021
|
Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894/document https://hal.archives-ouvertes.fr/hal-03427894/file/135-DavesneJG2021.pdf https://doi.org/10.1017/jog.2021.105 |
id |
ftunivnantes:oai:HAL:hal-03427894v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivnantes:oai:HAL:hal-03427894v1 2023-05-15T14:57:53+02:00 Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack Davesne, Gautier Domine, Florent Fortier, Daniel Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2021-09-27 https://hal.archives-ouvertes.fr/hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894/document https://hal.archives-ouvertes.fr/hal-03427894/file/135-DavesneJG2021.pdf https://doi.org/10.1017/jog.2021.105 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2021.105 hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894/document https://hal.archives-ouvertes.fr/hal-03427894/file/135-DavesneJG2021.pdf doi:10.1017/jog.2021.105 info:eu-repo/semantics/OpenAccess ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.archives-ouvertes.fr/hal-03427894 Journal of Glaciology, International Glaciological Society, 2021, pp.1 - 16. ⟨10.1017/jog.2021.105⟩ Arctic snowpack depth hoar polar desert soil moisture thermal conductivity [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2021 ftunivnantes https://doi.org/10.1017/jog.2021.105 2022-11-02T00:27:33Z International audience In polar deserts, depth hoar (hereinafter: DH) growth is not systematic unlike on tundra and this is critical for snowpack properties. Here, we address the spatio-temporal variability of the DH layer in the polar desert at two sites in the Canadian High Arctic: Ward Hunt Island (83°N) and Resolute Bay (75°N). Our data show that, over humid areas, DH represented a larger fraction of the snowpack and was characterized by lower density and coarser crystals than over dry gravelly areas. Increased soil moisture extends the zero-curtain period during freeze-up, leading to stronger temperature gradients in the snowpack and greater kinetic metamorphism. Our results also demonstrate that the large inter-annual variability in DH is primarily driven by wind conditions in the fall since this key variable controls the initial snow density and snow onset date. These strong controls exerted by soil moisture and meteorological conditions on DH growth in polar deserts highlight the possibility of major changes in polar snowpacks physical properties in response to the rapid climate and environmental changes currently affecting these regions. Article in Journal/Newspaper Arctic Journal of Glaciology polar desert Resolute Bay Tundra Ward Hunt Island Université de Nantes: HAL-UNIV-NANTES Arctic Resolute Bay ENVELOPE(-94.842,-94.842,74.677,74.677) Ward Hunt Island ENVELOPE(-74.161,-74.161,83.102,83.102) Hunt Island ENVELOPE(-100.601,-100.601,58.788,58.788) Journal of Glaciology 68 269 457 472 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Arctic snowpack depth hoar polar desert soil moisture thermal conductivity [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Arctic snowpack depth hoar polar desert soil moisture thermal conductivity [SDE.MCG]Environmental Sciences/Global Changes Davesne, Gautier Domine, Florent Fortier, Daniel Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
topic_facet |
Arctic snowpack depth hoar polar desert soil moisture thermal conductivity [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience In polar deserts, depth hoar (hereinafter: DH) growth is not systematic unlike on tundra and this is critical for snowpack properties. Here, we address the spatio-temporal variability of the DH layer in the polar desert at two sites in the Canadian High Arctic: Ward Hunt Island (83°N) and Resolute Bay (75°N). Our data show that, over humid areas, DH represented a larger fraction of the snowpack and was characterized by lower density and coarser crystals than over dry gravelly areas. Increased soil moisture extends the zero-curtain period during freeze-up, leading to stronger temperature gradients in the snowpack and greater kinetic metamorphism. Our results also demonstrate that the large inter-annual variability in DH is primarily driven by wind conditions in the fall since this key variable controls the initial snow density and snow onset date. These strong controls exerted by soil moisture and meteorological conditions on DH growth in polar deserts highlight the possibility of major changes in polar snowpacks physical properties in response to the rapid climate and environmental changes currently affecting these regions. |
author2 |
Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Davesne, Gautier Domine, Florent Fortier, Daniel |
author_facet |
Davesne, Gautier Domine, Florent Fortier, Daniel |
author_sort |
Davesne, Gautier |
title |
Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
title_short |
Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
title_full |
Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
title_fullStr |
Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
title_full_unstemmed |
Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
title_sort |
effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894/document https://hal.archives-ouvertes.fr/hal-03427894/file/135-DavesneJG2021.pdf https://doi.org/10.1017/jog.2021.105 |
long_lat |
ENVELOPE(-94.842,-94.842,74.677,74.677) ENVELOPE(-74.161,-74.161,83.102,83.102) ENVELOPE(-100.601,-100.601,58.788,58.788) |
geographic |
Arctic Resolute Bay Ward Hunt Island Hunt Island |
geographic_facet |
Arctic Resolute Bay Ward Hunt Island Hunt Island |
genre |
Arctic Journal of Glaciology polar desert Resolute Bay Tundra Ward Hunt Island |
genre_facet |
Arctic Journal of Glaciology polar desert Resolute Bay Tundra Ward Hunt Island |
op_source |
ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.archives-ouvertes.fr/hal-03427894 Journal of Glaciology, International Glaciological Society, 2021, pp.1 - 16. ⟨10.1017/jog.2021.105⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2021.105 hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894/document https://hal.archives-ouvertes.fr/hal-03427894/file/135-DavesneJG2021.pdf doi:10.1017/jog.2021.105 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1017/jog.2021.105 |
container_title |
Journal of Glaciology |
container_volume |
68 |
container_issue |
269 |
container_start_page |
457 |
op_container_end_page |
472 |
_version_ |
1766329984339673088 |